问如何创建proc_macro_attribute？ENRust是一门现代的、安全的系统级编程语言，它提供了丰富的元编程特性...
将它的TokenStream中的所有字符串文字转换成大喊大叫的情况。
Macro Code use darling::{Error, FromMeta}; use darling::ast::NestedMeta; use syn::ItemFn; use proc_macro::TokenStream; #[derive(Debug, FromMeta)] struct MacroArgs { #[darling(default)] timeout_ms: Option<u16>, path: String, } #[proc_macro_attribute] pub fn your_attr(args: TokenS...
Macro Code usedarling::{Error,FromMeta};usedarling::ast::NestedMeta;usesyn::ItemFn;useproc_macro::TokenStream;#[derive(Debug,FromMeta)]structMacroArgs{#[darling(default)]timeout_ms:Option<u16>,path:String,}#[proc_macro_attribute]pubfnyour_attr(args:TokenStream,input:TokenStream)->TokenStream{...
ENimport "fmt" func main() { dict := map[string]int{"key1": 1, "key2": 2} ...
I was making a derive proc macro and stumbled upon this weird error, and was told on the rust discord that this might be a bug. Basically, I have a proc macro that uses a helper attribute like this: #[proc_macro_derive(Test, attributes(t...
This is aproc_macrocrate to help keeping the code footprint of generic methods in check. Often, generics are used in libraries to improve ergonomics. However, this has a cost in compile time and binary size. Optimally, one creates a small shell function that does the generic conversions and...
#[declare_sql_function]extern"SQL"{fncoalesce(x:sql_types::Nullable<sql_types::VarChar>,y:sql_types::VarChar,)-> sql_types::VarChar;} Rust-analyzer emits "unsafe" hints forextern {}function blocks even if these blocks are completely consumed by an proc-macro attribute and never generate ...